82449442 has 8 divisors (see below), whose sum is σ = 126690732. Its totient is φ = 40219200.

The previous prime is 82449427. The next prime is 82449443. The reversal of 82449442 is 24494428.

It can be written as a sum of positive squares in 2 ways, for example, as 71893441 + 10556001 = 8479^2 + 3249^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×82449442² = 13595820972222728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82449443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 502659 + ... + 502822.

Almost surely, 2^82449442 is an apocalyptic number.

82449442 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

82449442 is a deficient number, since it is larger than the sum of its proper divisors (44241290).

82449442 is a wasteful number, since it uses less digits than its factorization.

82449442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005524.

The product of its digits is 73728, while the sum is 37.

The square root of 82449442 is about 9080.1675094681. The cubic root of 82449442 is about 435.2404395869.

The spelling of 82449442 in words is "eighty-two million, four hundred forty-nine thousand, four hundred forty-two".